ALL meanings of acritarch

A a
  • noun acritarch a type of small fossil 3
  • noun acritarch any of various microfossils, of unknown biological affinities, having a central cavity enclosed by a wall of chiefly organic composition. 1
  • noun acritarch (paleontology, palynology) Any small, non-acid soluble (i.e. non-carbonate, non-siliceous) organic fossil that cannot be classified. 0
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